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@openai-sdks openai-sdks released this 21 Sep 21:22
v4.66.0
1d689bf
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Learn about vigilant mode.

4.66.0 (2026-09-21)

⚠ BREAKING CHANGES

  • api: Removed the unsupported gpt-5.1-mini model's GPT_5_1_MINI constants and corresponding Known/Value enum cases from ChatModel, BetaResponse.Model, BetaResponsesClientEvent.ResponseCreate.Model, beta ResponseCreateParams.Model, and both beta and stable ResponseCompactParams.Model types. Code referencing any of these members must select an available model and be recompiled. This removal is covered by the SDK's minor-version compatibility exception.

Features

  • api: add external storage configuration management (#1032) (f26dbfd)
  • api: add safety case retrieval (#1033) (4c27852)
  • api: add safety warning and deactivation webhook events (#1031) (143c540)
  • api: add SIP media security to incoming call events (#1030) (3565b44)
  • api: support environment variable vault credentials (#1029) (683bfed)

Bug Fixes

  • api: correct model types and network policy docs (#1024) (f8cce9a)
  • close SSE responses at the terminal event (#1027) (1441ba1)
  • handle extreme retry dates and close retry responses (#1026) (18e36f8)
  • preserve explicit security-header removal (#1036) (5ac7585)
  • reject line breaks in multipart content types (#1025) (c3352aa)

Chores

  • api: document response management resources (#1034) (a363812)

Build System

  • deps: bump actions/setup-java from 5.7.0 to 6.0.1 (#1047) (205976b)
  • deps: bump org.junit.jupiter:junit-jupiter in / (#955) (d2969f8)
  • deps: bump org.yaml:snakeyaml in / (#1046) (b338b2a)
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